of Clay, 2012) or Röhre aus Gummi (Tube of Rubber, 2012) recall functional elements, such as those often found at building supplies stores. Rock on Top of Another Rock This was a pair of installations – one on the Valdresflye plateau in Norway and the other at the Serpentine Gallery in London in 2013. Exhibitions Fischli and Weiss had their first solo exhibition in 1981 at the Galerie Balkon in Geneva. After showing Suddenly This Overview at the Galerie Stähli in 1981, they became regulars on the international art scene. Their first solo exhibition in the United States was shown at the Sonnabend Gallery in New York in 1986. In more than 25 years of activity, the pair exhibited in some of the most important institutions and museums worldwide including Museu d’Art Contemporani de Barcelona (2000); Museum Boijmans Van Beuningen in Rotterdam (2003); Museo Tamayo Arte Contemporáneo in Mexico City (2005); and the Rencontres d'Arles festival, France. A U.S. retrospective of their work was organised by the Walker Art Center in 1996 and subsequently traveled to the San Francisco Museum of Modern Art, San Francisco; and Museum of Contemporary Art, Los Angeles. Another retrospective of their work was held at Tate Modern, London in 2006, and traveled to the Musée d'Art Moderne de la Ville de Paris, Kunsthaus Zürich and the Deichtorhallen, Hamburg. Recent solo exhibitions were held at the Art Institute of Chicago (2011) and the Serpentine Gallery, London (2013). In 1995 they represented Switzerland in the Venice Biennale and in 2003 were included in the "Utopia Station" exhibition of the Venice Biennale curated by Rirkrit Tiravanija for which they were awarded the leone' d'oro for best work in the main exhibition. In 2000, the exhibition Aprendiendo menos (learning less) united Fischli and Weiss with Gabriel Orozco and Richard Wentworth. Three different perspectives through photography, where the artists are a means to portray street findings within the urban landscape, its surroundings and its objects. It was curated by Patricia Martín. Peter Fischli and David Weiss have been represented by the Matthew Marks Gallery since 1999. The Solomon R. Guggenheim Museum in New York City presented their first survey in New York in 2016. The exhibition was accompanied by a display of their text-based monument to labour, How to Work Better (1991), as a wall mural at the corner of Houston and Mott Streets, and by screenings of Büsi (Kitty)